Quetzalcoatl

Quetzalcoatl is a surprisingly gentle god, especially considering the Aztec pantheon is filled with deities who demand human sacrifice, or brood in dark corners of the underworld. He is the great benefactor, the ultimate good guy, always making sure that his worshippers have big harvests and luck in warfare. However, it should be mentioned at this point that Quetzalcoatl is an unfathomably enormous feathered dragon who can fly anywhere in the universe. It's unlikely he'd ever see a reason to fight with Superman, since they're both benevolent. But if a battle were to go down, our money would be on the trans-dimensional bird-dragon.